[Wrf-users] Re: Wrf-users Digest, Vol 40, Issue 9

[wrfhelp]

For surface observations, the influence of it will be extended to the  
model-calculated boundary layer with
the weight decreasing with vertical distance above the surface.  
Therefore, the surface data will not influence
model above model-computed PBL height. For upper air data, they do not
extend down to the boundary layer.

wrfhelp

On Dec 29, 2007, at 12:00 PM, wrf-users-request at ucar.edu wrote:

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> Today's Topics:
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>    1. WRF Model Version 2: Experimental Nudging Options (Dan  
> Dansereau)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 28 Dec 2007 17:02:14 -0800
> From: "Dan Dansereau" <ddansereau at hydropoint.com>
> Subject: [Wrf-users] WRF Model Version 2: Experimental Nudging Options
> To: <wrf-users at ucar.edu>
> Message-ID:
> 	<9E8869B62C56004781914D8107A36DEF01AA9A11 at email.corp.hydropoint.com>
> Content-Type: text/plain;	charset="iso-8859-1"
>
> To All
> After reading a considerable amount of contradicting email about  
> the observational nudging - I feel that I need to ask the experts a  
> set of yes/no questions, and possibly why.
>
> 1) Does the observational nudging work on "the surface" / or lowest  
> or inside the boundary layer?
>
> 2) Do the surface only stations nudge or change the data above the  
> boundary layer?
>
> And
>
> 3) If number 1 is no - could you point me to some documentation/ 
> reference material as to why this is this way?
>
>
> Thanks in Advance
> Dan A. Dansereau
> Director - WeatherTRAK Climate Center
> 1.800.362.8774 Main Office
> 1.707.338.4539 cell
> 1.435.755.9417 Utah Office
>
>
>
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> End of Wrf-users Digest, Vol 40, Issue 9
> ****************************************